A clickable message that is "pushed" from the application or back-end server to the user interface is called a push notification. However, push notifications are not limited to desktop applications and mobile applications. These notifications can be delivered at a specific time, as a result of user behavior, or when the user is in a specific location.
Push notifications are very different from in-app notifications or pop-ups that you see on a website or in mobile apps. Pop-ups are activated when you use the website or app, while push notifications don't require the app to be open. Push notifications are an instant form of direct and automated communication between a website and its end users.
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